Given how much variation in depiction of them there is in fiction, folklore and so forth- one can't exactly say that "low level elemental evil" is the norm rather than the exception.

Personally I'd make all races something the DM has to put together of their own accord (possibly using Human as a base).

Halflings- Humans with the Short modification.
Dwarves- Humans with the Short and Strong modifications
Elves- Humans with the Fey modification
Orcs- Humans with the Strong and Tough modifications
Sahaugin- Humans with the Fishfolk modification.
Lizardfolk- Humans with the Scaled One modification


And so forth. People who want Evil orcs could give them a Corrupted modification- those who don't, wouldn't.